AutoCodes – Lexus – B1802 Lexus

B1802 Lexus Code - Short to GND in Driver Side Squib Circuit

Quick Answer

The Driver Side Squib Circuit consists of the Center Airbag Sensor Assembly, the Spiral Cable, and the Steering Pad. Common causes include Instrument panel wire, Faulty Spiral cable, Faulty Steering Pad (Driver Side Squib). Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B1802 Lexus indicates Short to GND in Driver Side Squib Circuit.
Common causes: Common causes include Instrument panel wire, Faulty Spiral cable, Faulty Steering Pad (Driver Side Squib).
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,361

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 20, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1802 Lexus Description

The Driver Side Squib Circuit consists of the Center Airbag Sensor Assembly, the Spiral Cable, and the Steering Pad. The circuit signals the Supplemental Restraint System (SRS) to deploy when deployment conditions are met. The Diagnostic Trouble Code (DTC) is recorded when a malfunction is detected in the Driver Side Squib Circuit.

OBDII Code B1802 Lexus - Short to GND in Driver Side Squib Circuit - AutoCodes.com — B1802 Lexus Code - Short to GND in Driver Side Squib Circuit

What does this mean?

What are the Possible Causes of the DTC B1802 Lexus?

Instrument panel wire
Faulty Spiral cable
Faulty Steering Pad (Driver Side Squib)
Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1802 Lexus?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1802 Lexus code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1802 Lexus code?

Need more information on how to fix the B1802 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1802 Lexus code diagnosed by a professional: Find a repair shop in your area

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1802 Lexus Code

1. What are the common symptoms of OBDII code B1802 in a Lexus related to the Short to GND in Driver Side Squib Circuit?

- Common symptoms include the airbag warning light illuminating on the dashboard, loss of functionality in the driver-side airbag, and possible diagnostic trouble codes related to the airbag system.

2. What are the possible causes of the B1802 OBDII code in a Lexus due to Short to GND in Driver Side Squib Circuit?

- The code B1802 can be caused by a short to ground in the driver side airbag circuit, faulty wiring connections, damaged clock spring, or a defective airbag squib.

3. How can I diagnose the B1802 code in a Lexus related to Short to GND in Driver Side Squib Circuit?

- Diagnostic steps involve using an OBDII scanner to retrieve the specific code, inspecting the wiring harness for any visible damage, checking the clock spring for continuity, and testing the driver side airbag squib resistance.

4. What precautions should be taken when working on the airbag system to resolve the B1802 code in a Lexus?

- Always disconnect the vehicle's battery and wait at least 10 minutes before working on the airbag system to prevent accidental deployment. Follow proper safety procedures and wear appropriate personal protective equipment.

5. Can the B1802 OBDII code related to Short to GND in Driver Side Squib Circuit be fixed at home, or is professional assistance recommended?

- While some DIY enthusiasts may attempt to diagnose and repair the issue, dealing with airbag systems can be hazardous. It is advisable to seek professional help from a qualified technician to ensure proper diagnosis and repair.

6. Is it safe to drive a Lexus with the B1802 code indicating a Short to GND in Driver Side Squib Circuit?

- Driving a vehicle with an unresolved airbag issue is not recommended as it compromises occupant safety in the event of a collision. It is best to address the problem promptly to ensure the airbag system functions correctly.

7. How much does it typically cost to repair the B1802 OBDII code in a Lexus caused by Short to GND in Driver Side Squib Circuit?

- The cost of repair can vary depending on the exact cause of the issue, parts needed, and labor rates. It is advisable to obtain estimates from reputable repair shops or dealerships to determine the cost involved.

8. Can resetting the OBDII code B1802 related to Short to GND in Driver Side Squib Circuit temporarily resolve the issue?

- Resetting the code may temporarily turn off the warning light, but it will not fix the underlying problem causing the B1802 code. It is essential to diagnose and address the root cause to ensure the airbag system functions correctly.

9. Are there any recalls or service bulletins related to the B1802 code in Lexus vehicles due to Short to GND in Driver Side Squib Circuit?

- It is recommended to check with Lexus authorized service centers or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls or service bulletins related to this specific OBDII code.

10. What steps should be taken after repairing the B1802 OBDII code caused by Short to GND in Driver Side Squib Circuit to ensure the issue does not reoccur?

- After repairing the issue, it is crucial to perform a thorough system check, clear the diagnostic trouble codes, and test the airbag system to confirm proper functionality. Regular maintenance and inspections can help prevent similar problems in the future.